Hollow 42. A square wave at 142 Hz, originating from Subway Tunnel. Recorded in a open air environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2417 — Hollow 42
Owner![]()
0x56D9Ec1fb6F00811E75A7D4550e027b0a9999999
ID#2417
Rarity
LO:65%
Frequency
142 Hz
X-HI:9%
Wave Type
Square
X-HI:10%
Resonance
Dense
X-HI:6%
Era
1980s
X-HI:8%
Origin
Subway Tunnel